Apple today filed petitions with the United States Patent and Trademark Office challenging the validity of four Qualcomm patents amid an increasingly vicious legal battle, reports Bloomberg. Apple is aiming to get the USPTO to cancel the four Qualcomm patents, arguing that they do not cover new ideas.
The patents in question cover camera autofocusing, a device that functions as a phone and a digital assistant, touch-sensitive displays, and circuit memory.
Challenging patent validity is one of Apple's typical strategies in its legal battles. According to Bloomberg , Apple has filed a total...Read more ...

Apple today is further expanding its legal battle against chipmaker Qualcomm. According to a report from Bloomberg , Apple has filed petitions with the U.S. Patent and Trademark Office to challenge four of Qualcomm's patents...
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